Manufacture of air filters



1943- A. .J. J. POELMAN 2,326,967

MANUFACTURE OF AIR FILTERS 2 Sheets-Sheet 1 Filed June 3 1941 Aug. 17, 1943. A. J. J. POELMAN MANUFACTURE OF AIR FILTERS Filed June 5,1941 2 Sheets-Sheet 2 Through the central bore of shaftftlfoi thefl back a its imam position, together with the .fixed'headpassesa sliding rod 9; As'shown in mounted fllterwhich' remains engaged on the Figure 3, this rod is fixed tothe centre of a mov-. mandrel 60. l A push onrod l2 sufiices for finally able plate 90 oibox 3|. 1 Around the edgeot this I ejecting the mounted filter. Since the mounting box are arranged a number ofslots 33,'tlirough 5 may still be warm,'one may provide, for receiveach of which a spring blade 34," fixed outside ing thispart, a small flanged plate with a handle.

the box, protrudes inside the latter. What I claim is:

' Into thecentral bore of memberrl gand of shaft Machine of the type described, particularly reaching to the centre of the filter-carr ing 1 c m ri ng in'combinatl mandrel 60. r a 1 which is provided with a central pouring Qaperf- 6 (Figure penetrates a secondjs'lidi'ng rod l adapted fonfixing a a; mounting and The lute used -is maintained molten by any suitable means in a vessel"llltftheabottombf heights, a mounting carrying member adapted ture controlled by a tappet"IIlI- actuated b'y a spring; Said vessel issupported by the vertical I I I rod I02 fixed to the base plate .2. i-ine'horrzori'ta -i ai bas p atera filter ar n me b r d p d n 153 of t 1 1 container 't gq-ito receive the filter to be fixed and rotatably and r of a head I04 provided'with a locking spring and sl y mounted on the second suppo ge further traversed by the verticalrod IOZJ Due j b ve other e on d' c e l I on, a'frame, a base plate 7 pivoted to this frame and inclined by an adjustb ableangle with respect to the horizontal, onthis' base plate two supports arranged at different ofrece ive' Fsliri'ci mounting and mounted rotatably I I n the support mounted belowthe other one on r to: this arrangement, 'the' 'vessel I00 :mayjbe: set means'ior'rotatin Said m0l 8 y m V at any required-level and in;any;sui t able:p0si-' her, means for'mol'li gsaid filter carrying mem- Etion. The to of-the: tappet I M, is i'votedto a b r n ai m un in ca'rr m m r tow rds horizontal lever. I pivotedto'. the. support:iI06. one anotherifor'bringing thelfilter into contact To the other'endof this lever is .pivotedza-islide with' the-inounting',nieans-ior'rotatablyi coupling III] which, .when actuated, permits -the lute to said filter 'carrying'member withsaid mounting To lever I :5 is also pivoteda small bar 108 contact with the mounting, means for supplying which, through the meansof abent pivoted lever .1 said mounting carrying member-with an amount I "I09, actuatesthe pivoting link IIIla. The latter of lute necessarygior' sealing, said filter to said carries aFcup-shaped member II-I' which,,when mounting- I I 1 r theLtappet IOI ism the open position, is thus J 2. Machine according to claim -1 in which said 7 held clear from the-stream of' molten lute runfilter carrying member is constituted by-a hollow hing out of vessel' I IJIl. It is,'on the' contrarY, I shaft carryingat its inner 'end'a mandrel'rebrought back below the outflow apertureof the 135 {ceiving the filter; said means {for moving the :vessel when the tappet IIlI closes the latter I i-filter carrying member towards theQmountin'g This machine operates as follows:

carryingsmemberi before bringing the filter into carrying member-comprising memberqsliding The frame I is set at the required slope and on-,said second 'support and al control mexnberthe vessel I00 containing-the -mo lten lute is 'for actuatingisaidsliding-member;

' brought to a pofsitionin-which its pouring'hole V 3.1Machine accordi g 'to claiml, inwhich said *the blade springs 3!;

lies on thefa'xis-of the heads, above the lower I -mea'ns' for 'cou lingv in rotation vsaid filtercarryfedgeof box 3|.- The motor is then started and ing membe with said'iiiounti ng estifying lmemthe' box 3| fitted witha mountin s (Figure 7), her com'prise a mmbrin roim ofca cylindrical the folded edge? of'which s applied to that of "box coupled in: mtauonwith said filter carrying the box and which is mounted in the latter by 4 member and slidablewith respect'tofthe'llatter A filte f.B (-liig ure 5) isplacedon themandrel continue its movement towardsjthemountin 'ea'w h' sie 'fi d-ie b "ith v d 195: rr g em er w h he vi' lw o b i th ingthe'; central apertur'eof the fl ter. 7 'filter-iritopcont ""jwith the mounting;

in-order to permit this filter 'carryingfmember to T-lie -iriountingjis thenfilled withthe 'relduiredxfio 4. Machine'j according: claiml; comprising amount of molten "lute winch spreads over the f further, means iorbririgingback, Vafter's'ealing innerfconirittlsiiffade of the mountingfun derthe Y the filter to "itsFI'nount' combined eiie'ct'of its inclined po'sitionandrota memberpi'ovided jwith thefsealed filter,"'to its initial position,'and inean's for ejecting from the filter-carrying 'rnembenout of themachine the tion. After stoppin g'the flow or moltenlutefthe lever 5 is."a'ctuated, bringing firstjodn'eshlthe 5f s'aid "filter" carrying boxti u'rithboxfl whichfis thus-alsodriven in filter sealed missmam I I H 'rotation with shaft 3 andthe mounting, together 5. Machinejaccordingtg claim :1, hi hz m withthe filter. Anne e'ndof its s troke lever 5 means" for supplying lute t olsaid" mounting g rocks. shaft-6- -with 'respect'to the box 12' against lying mernber comp is 11, 13; nt n n tank I ej acted fro the'act'ion of spring I0. Thefilter'isipushedin 0 mounted adjustablyvi n' heightand position above fits-mounting and its edges 'are i thusxsealed in 7 said mountin carrying rnember and said i the l uteq I II I I II I II I I ,II I II controlling the distribution of'lute' by-said tank. 1" l e ii e P m et fifl brm a s' l a I itit -m nt fit w h'iw' t rii ARM ND JACQUES JULIEN Poem/LAN.

i "box 5: w n i w re; i r us I 

